Social media advertising: costs, platforms and what works

What is social media advertising?

Social media advertising is paying a platform to show your posts, images and videos to people you choose, inside the feeds where they already spend their time. X Ad Campaign works on one of these platforms, X, and the questions it hears most are the ones every advertiser faces: which platform, what it costs, and how to tell whether it worked.

The market is large. Sociallyin puts global social advertising spend at over three hundred billion dollars¹ for the year. Almost all of it is bought the same way: through auctions that run every time someone opens an app, where advertisers compete for that person’s attention, and the platform weighs each bid against how likely the ad is to get the response the advertiser asked for.

That shared mechanism means the platforms differ mostly in three things: who uses them, what formats they show, and what an impression or click costs there. Those three decide which platform suits which business.

Which social media platforms can you advertise on?

All the large ones, and they reach very different shares of people. In the U.S., Pew Research Center’s latest survey finds YouTube and Facebook used by most adults, Instagram by half, TikTok by over a third, and Snapchat and X by around a fifth to a quarter².

Reach is only the start. A smaller platform can be the better buy when your buyers concentrate there, and a huge one can be wasteful when they do not.

• Facebook and Instagram (Meta): the widest reach, deep tools for shops, catalogues and lead forms, and a single ads manager for both.
• YouTube: video at scale, from short clips to long-form; strong for explaining and demonstrating.
• TikTok: short vertical video, a younger audience, and creative that has to look native to work.
• LinkedIn: targeting by job title, company and industry; the professional network for B2B.
• Pinterest: people planning purchases, projects and events; strong for home, fashion, food and weddings.
• Snapchat: a young audience, mostly on mobile, with camera-first formats.
• X: news, conversation and live moments; keyword and topic targeting that follows what people discuss right now.

What does social media advertising cost on each platform?

Prices come from auctions, so published figures are ranges rather than prices. Sociallyin’s breakdown gives a useful side-by-side view:

YouTube is priced mostly per view rather than per click, at ten to thirty cents per view⁵ in the same breakdown.

Other sources put X lower still: Hootsuite’s own benchmarks show X’s cost per thousand impressions and per click below Meta’s⁷. The spread between sources is normal; each measures different advertisers, objectives and industries. What they agree on is the shape: professional targeting is the most expensive, visual and entertainment platforms the cheapest, and X sits towards the cheaper end. The detailed picture for X is in what X ads cost. The head-to-head with Facebook, including where Facebook still wins, is in are X ads cheaper than Facebook ads?.

Why do prices vary so much between platforms?

Because the auction prices the person, not the ad slot. Four things push the price up or down.

Who you target. Audiences many advertisers want (senior professionals, high-income shoppers, people in expensive markets) cost more on every platform. That is most of why LinkedIn is expensive: its whole proposition is reaching people companies compete for.

What you pay for. A campaign optimised for purchases pays more per impression than one optimised for reach, because the platform shows it to the smaller set of people most likely to buy.

When you run. Prices rise in busy seasons, around big events and in the last weeks of the year, when more advertisers compete for the same people.

How good the ad is. Platforms reward ads people engage with, because engagement keeps users on the platform. A strong ad wins auctions at a lower price than a weak one with a higher bid.

Which platform is right for your business?

The one where your buyers are and your offer fits the format. A quick way to narrow it down:

Most businesses do best starting with one platform, or two at most, and adding more once the first is measured and working. Whether X is the right first or second platform is covered in is X good for advertising?.

Do you need organic posts as well as ads?

Usually yes, but less of them than most social media plans assume. Organic posts and paid ads do different jobs, and each makes the other work better.

Organic posting builds the profile people check after they see an ad. Someone who clicks through to an account and finds it empty or abandoned trusts the ad less. A profile with recent, useful posts reassures them that the business is real and active.

Organic posts are also a cheap testing ground. Every post is a small experiment in message and format, run on the people who already follow the account. The posts that do best are the strongest candidates for paid promotion, and promoting a proven post usually costs less than launching an untested ad, because the auction rewards ads people engage with.

What organic posting rarely does on its own is reach new buyers at scale. Most platforms show organic posts to a small share of followers, and growing a following takes time. That is the gap paid advertising fills: it puts the best content in front of people who do not follow you yet, chosen by targeting.

A sensible split for a small business is a steady, modest rhythm of organic posts on the one or two platforms where it advertises, and an ad budget that promotes the best of them alongside ads written for specific offers. Posting everywhere without a budget, or advertising from an empty profile, both waste effort.

What strategies work across social platforms?

A few habits pay off everywhere.

Make ads that look like the platform. A polished TV advert looks out of place in a TikTok feed; a stock photo looks out of place on X. Ads that look like good posts on that platform get more attention and cost less.

Choose the objective by the result. If you will judge the campaign by sales, optimise for sales, not for clicks or engagement. The platform will find whatever you ask for, including cheap engagement from people who never buy.

Start broad enough to learn. Narrow audiences cost more and give the auction little room. Most platforms now do better with broader targeting and strong creative than with tightly stacked interests.

Retarget the people who already know you. Website visitors, video viewers and past customers convert at much higher rates than strangers, on every platform.

Refresh creative before it tires. Performance falls as the same people see the same ad repeatedly. A steady supply of new versions keeps costs down.

Measure once, properly. Install each platform’s pixel or server connection, check a test conversion, and compare platforms using the same definition of a result.

How much should you spend on social media advertising?

Enough for one campaign to learn, and no more until it has. Platforms need a steady flow of results to optimise, so a small budget spread across five audiences and three platforms produces a little data about everything and a clear answer about nothing. The same budget concentrated on one campaign, one audience and a few ad versions for a month usually answers the real question: what does a result cost here?

From there, budget follows results. If the cost per result on a platform is below what a customer is worth, increase it in steps while watching whether the cost holds. If it is above, change one thing at a time (the audience, the offer, the creative) before deciding the platform does not work.

Remember the agency or freelancer fee if someone else runs the campaigns. It is paid on top of the ad budget, and with small budgets it can be larger than the media spend itself. How to judge that trade-off is covered in how to choose a digital marketing agency.

How do you measure social media advertising?

By the cost of a business result, measured the same way across platforms. Every platform reports its own conversions, and every platform’s report flatters itself: each claims the sales it touched, so adding up platform reports usually produces more sales than the business made.

Three habits keep measurement honest. Use one definition of a result everywhere. Compare platform reports against the business’s own numbers (orders in the shop system, leads in the CRM) every month. And ask new customers how they heard about you, in free text, which surfaces channels that tracking misses.

In Europe, consent rules mean some visitors are not tracked at all, so every platform undercounts. That is fine as long as the comparison between platforms uses the same, consistently incomplete data.

When is social media advertising the wrong choice?

When people are not looking for what you sell in a feed. Products bought through urgent searches, such as emergency repairs or legal help, usually do better on search ads, where the need is explicit.

When the offer cannot be understood quickly. Feeds give an ad a few seconds. A product that needs a long explanation or a consultation can use social ads to build familiarity, but rarely to close the sale.

When nothing can be measured. If sales happen offline or months later and cannot be tied back to campaigns, social advertising becomes spending you cannot judge. Fix the measurement first.

Quick answers

What is social media advertising?

Social media advertising is paying a platform such as Facebook, Instagram, TikTok, LinkedIn, Pinterest, YouTube or X to show your posts and videos to people you choose, in the feeds where they already spend time. You pay through an auction, per impression, click or result. X Ad Campaign specialises in one of these platforms, X, and runs campaigns in the client’s own account.

How much does social media advertising cost?

There is no list price: you set a budget and the auction sets the price per result. Published ranges put clicks from a few tens of cents to a few dollars, cheapest on visual and entertainment platforms and most expensive on professional networks. A useful first test budget is whatever lets one campaign run for a month without splitting it across many audiences.

Which social media platform is best for advertising?

The one where your buyers spend time and your offer fits the format. Large platforms like Facebook and Instagram reach the most people; TikTok and YouTube suit video; LinkedIn suits job-title targeting; Pinterest suits planning and shopping; X suits conversation, news and live moments. Most businesses do best with one or two platforms done properly.

Is a cheaper click always better value?

Not on its own. A cheap click from someone who will never buy is worth less than an expensive click from a qualified buyer. Compare platforms on the cost of the result you care about, a sale, a lead or an install, measured the same way on each, after enough time and budget for the numbers to settle.